QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

6 km NNW of Gypsum, Colorado

· 5.0 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Eagle County 26 kmPitkin County 54 kmSummit County 73 kmLake County 77 kmGarfield County 80 kmRoutt County 87 kmGrand County 87 kmRio Blanco County 109 kmClear Creek County 112 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.5 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Eagle County, 26 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1491 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 39.6981, -106.9809. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Eagle County, CO 26 km (16 mi) WNW of here earthquakes near Eagle County
Pitkin County, CO 54 km (33 mi) N of here earthquakes near Pitkin County
Summit County, CO 73 km (45 mi) W of here earthquakes near Summit County
Lake County, CO 77 km (48 mi) NW of here earthquakes near Lake County
Garfield County, CO 80 km (50 mi) E of here earthquakes near Garfield County
Routt County, CO 87 km (54 mi) S of here earthquakes near Routt County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

11 earthquakes have been recorded within 50 km since this one.

  1. 1.9 26 km WSW of Yampa, Colorado
  2. 2.0 29 km WSW of Yampa, Colorado
  3. 2.2 10 km NW of Dotsero, Colorado
  4. 2.5 30 km NNW of Dotsero, Colorado
  5. 2.6 12 km S of Mulford, Colorado
  6. 2.1 6 km NNW of Chacra, Colorado
  7. 2.9 6 km NNE of Chacra, Colorado
  8. 2.5 7 km NNW of Chacra, Colorado
  9. 2.6 6 km NNW of Chacra, Colorado
  10. 2.9 8 km NNW of Chacra, Colorado
  11. 2.1 9 km NNE of New Castle, Colorado

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.